Camera module and method for controlling the same

ABSTRACT

A camera module is provided, including a holder, a base, a bottom, an image sensor, and a first biasing element. The holder holds an optical lens and is disposed on the base. The bottom supports the image sensor and connects to the base via the first biasing element. The bottom and the image sensor can be moved with respect to the base by the first biasing element.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional Application No.62/316,845, filed on Apr. 1, 2016, and Taiwan Patent Application No.106105425, filed on Feb. 18, 2017, the entirety of which areincorporated by reference herein.

BACKGROUND OF THE INVENTION Field of the Invention

The application relates in general to a camera module, and in particularto a camera module provided with a biasing element for forcing an imagesensor to move.

Description of the Related Art

Thanks to ongoing technological development, recent electronic devices(such as tablet computers and smartphones) usually include a lens modulecapable of aiding in photography or recording video. However, an imagemay come out blurry if the user shakes the lens module in the electronicdevice. To improve image quality, it is increasingly important to designa shockproof lens module.

BRIEF SUMMARY OF INVENTION

To address the deficiencies of conventional products, an embodiment ofthe invention provides a camera module including a base, a holder, animage sensor, a bottom, and a first biasing element. The holder isconfigured to hold an optical lens and connected to the base. The imagesensor is disposed on the bottom. The first biasing element comprises ashape-memory alloy and connects to the bottom and the base, wherein thefirst biasing element forces the bottom and the image sensor to moverelative to the base.

In some embodiments, the camera module further comprises a plurality offirst biasing elements forcing the bottom and the image sensor tolinearly move relative to the base.

In some embodiments, the base has a first central axis, the bottom has asecond central axis, and the first biasing element forces the bottom andthe image sensor to move relative to the base, so that the secondcentral axis has an angular displacement relative to the first centralaxis.

In some embodiments, the first biasing element is situated between thebase and the bottom.

In some embodiments, the camera module further comprises a first elasticelement connected to the bottom and the base.

In some embodiments, the first elastic element is substantiallyperpendicular to an optical axis of the optical lens and has an outersection, an inner section, and a middle section, wherein the outersection and the inner section are respectively affixed to the base andthe bottom, and the middle section connects the outer section to theinner section.

In some embodiments, the camera module further comprises a guidingmember, and the base has a groove with the guiding member disposedtherein, wherein the first biasing element is extended around theguiding member and has a U-shaped structure.

In some embodiments, the camera module further comprises a secondbiasing element, comprising a shape-memory alloy and connected to theholder and the base, wherein the second biasing element forces theholder and the optical lens to move relative to the base.

In some embodiments, the camera module further comprises a conductorformed on the base by insert molding or 3D molded interconnect devicetechnology, wherein the conductor is electrically connected to thesecond biasing element.

In some embodiments, the second biasing element has a first section anda U-shaped second section, and the first section is substantiallyparallel to a first central axis of the base and connects to the secondsection.

In some embodiments, the second biasing element further has a thirdsection substantially perpendicular to the first central axis, and thesecond section connects the first section to the third section, whereinthe second section and the third section are situated on opposite sidesof the first section.

In some embodiments, the camera module further comprises a secondelastic element, and the base further has a stage portion and at leastone protrusion, wherein the protrusion protrudes toward the holder fromthe stage portion, and the second elastic element connects theprotrusion to the holder.

An embodiment of the invention provides a method for controlling thecamera module, wherein the camera module further comprises a pluralityof first biasing elements disposed between the base and the bottom, themethod comprising applying a plurality of driving signals to the firstbiasing elements respectively to move the bottom, so that a secondcentral axis of the bottom has an angular displacement relative to afirst central axis of the base.

Another embodiment of the invention provides a method for controllingthe camera module, wherein the camera module further comprises aplurality of second biasing elements disposed on different sides of thebase, the method comprising: applying a plurality of driving signals tothe second biasing elements respectively to move the holder, so that anoptical axis of the optical lens has an angular displacement relative toa first central axis of the base.

Another embodiment of the invention provides a camera module comprisinga base, a holder, a bottom, an image sensor, a frame, and a firstbiasing element. The base has a first central axis, and the holder isconfigured to hold an optical lens and is connected to the base. Thebottom has a second central axis and affixed to a lower surface of thebase. The image sensor is disposed on the bottom, and the frame has athird central axis and surrounds the base and the bottom. The firstbiasing element comprises a shape-memory alloy and connects to thebottom and the frame. When the first biasing element deforms, the firstbiasing element forces the bottom, the image sensor, and the base tomove together relative to the frame, and the first central axis and thesecond central axis have an angular displacement relative to the thirdcentral axis.

In some embodiments, a gap is formed between the frame and the base.

BRIEF DESCRIPTION OF DRAWINGS

The invention can be more fully understood by reading the subsequentdetailed description and examples with references made to theaccompanying drawings, wherein:

FIG. 1 is an exploded diagram of a camera module according to anembodiment of the invention;

FIG. 2A is a schematic diagram of the camera module in FIG. 1 afterassembly (the housing thereof is omitted);

FIG. 2B is another perspective schematic diagram of the camera module(the housing thereof is omitted) in FIG. 2A;

FIG. 3 is a sectional view diagram taken along line A-A in FIG. 2B;

FIG. 4 is a schematic diagram of the bottom and the image sensorlinearly moving along the direction of the first central axis;

FIG. 5 is a schematic diagram of the second central axis having anangular displacement with respect to the first central axis;

FIG. 6 is a schematic diagram of the holder linearly moving along thedirection of the optical axis;

FIG. 7 is a schematic diagram of the optical axis having an angulardisplacement with respect to the first central axis;

FIG. 8 is a schematic diagram of a camera module according to anotherembodiment of the invention;

FIG. 9 is a bottom plan view diagram of the camera module in FIG. 8;

FIG. 10 is a sectional view diagram taken along line B-B in FIG. 8; and

FIG. 11 is a schematic diagram of an optical transceiver assembly isarranged on a circuit board and the image sensor.

DETAILED DESCRIPTION OF INVENTION

The making and using of the embodiments of the camera modules arediscussed in detail below. It should be appreciated, however, that theembodiments provide many applicable inventive concepts that can beembodied in a wide variety of specific contexts. The specificembodiments discussed are merely illustrative of specific ways to makeand use the embodiments, and do not limit the scope of the disclosure.

Unless defined otherwise, all technical and scientific terms used hereinhave the same meaning as commonly understood to one of ordinary skill inthe art to which this invention belongs. It should be appreciated thateach term, which is defined in a commonly used dictionary, should beinterpreted as having a meaning conforming to the relative skills andthe background or the context of the present disclosure, and should notbe interpreted in an idealized or overly formal manner unless definedotherwise.

FIG. 1 is an exploded-view diagram of a camera module 1 according to anembodiment of the invention, and FIGS. 2A-2B are schematic diagrams ofthe camera module 1 in FIG. 1 after assembly and a housing 40 thereof isomitted. The camera module 1 can be disposed in an electronic device,such as a camera, a tablet computer, or a cell phone, and it can beconfigured with an optical lens (not shown) and an image sensor IMdisposed therein. The optical lens and the image sensor are movable withrespect to each other, so that the camera module 1 has an auto-focusing(AF) function and optical image stabilization (OIS).

As shown on FIGS. 1 and 2A-2B, the camera module 1 primarily comprises abase 10, a bottom 20, a holder 30, a housing 40, an image sensor IM, aplurality of first elastic elements S1, a plurality of first biasingelements W1, a plurality of second elastic elements S2, and a pluralityof second biasing elements W2. The bottom 20 is disposed under the base10 and can be configured with the image sensor IM. The holder 30 isdisposed on the base 10 and can be configured with an optical lens (notshown). The image sensor IM is configured to receive light from theoutside of the camera module 1 and through the optical lens so that animage is acquired. The connection between the base 10 and the bottom 20is described below. The connection between the holder 30 and the base 10will be described later.

The base 10 and the bottom 20 respectively have a first central axis C1and a second central axis C2. In a normal condition, the first centralaxis C1 coincides with the second central axis C2. The first elasticelements S1 (such as metal springs) are connected to the base 10 and thebottom 20 and are substantially perpendicular to an optical axis O ofthe optical lens. In particular, each of the first elastic elements S1has an outer section S11, an inner section S12, and a middle section S13(as shown in FIG. 2B), wherein the inner and outer sections S11 and S12are respectively affixed to a lower surface 101 of the base 10 and alower surface 201 of the base 20. The middle section S13 connects to theouter and inner sections S11 and S12, so that the bottom 20 is movablyconnected to the base 10.

The first biasing elements W1, such as wires comprising a shape-memoryalloy (SMA), are also connected to the base 10 and the bottom 20, andtheir lengths can be changed by applying one or more driving signals(e.g., electrical current) to them from an external power source. Forexample, when applying driving signals to heat the first biasingelements W1, the first biasing elements W1 are deformed (e.g., elongatedor shortened). When the application of the driving signals is stopped,the deformed first biasing elements W1 will recover to their originallengths. In other words, by applying one or more appropriate drivingsignals, the lengths of the first biasing elements W1 can be controlledto alter the posture of the bottom 20. The first biasing elements W1,for example, may comprises a titanium-nickel (TiNi) alloy, atitanium-palladium (TiPd) alloy, a titanium-nickel (TiNiCu) alloy, atitanium-nickel-palladium (TiNiPd) alloy, or a combination thereof.

Referring to FIGS. 2A-2B and 3, FIG. 3 is a sectional view diagram takenalong line A-A in FIG. 2B. As shown in FIG. 2A, the base 10 has asubstantially rectangular main body 11, four grooves R are respectivelyformed on four different sides of the upper surface of the main body 11,and four guiding members G (for example, cylinder rollers) are disposedin the grooves R, respectively. As shown in FIG. 3, the first biasingelements W1 are positioned between the base 10 and the bottom 20 in adirection that is perpendicular to the second central axis C2, and arerespectively disposed around the guiding members G and have a U-shapedstructure. Two conductive blocks L electrically connect to two ends ofeach of the first biasing elements W1, and the conductive blocks L areaffixed to the base 10 and the bottom plate 20, respectively (forexample, they are affixed to the base 10 and the bottom 20 by anengaging means or an adhesive). Therefore, the first biasing elements W1can be connected to the base 10 and the bottom 20, and when the externalpower source applies the drive signal to one or a plurality of firstbiasing elements W1 to deform, the posture of the bottom 20 can beadjusted, and the image sensor IM disposed on the bottom 20 is alsomoved or rotated with the bottom 20.

It should be noted that a plurality of conductive wires (not shown) canbe formed on the base 10 and the bottom 20 by insert molding or 3Dmolded interconnect device (MID) technology and electrically connect tothe conductive blocks L. Thus, the four first biasing elements W1 formfour respective independent circuits, whereby driving signals (e.g.,current) can be supplied to them respectively from an external powersource via the wires, and the lengths of the first biasing elements W1can be changed to adjust the posture of the bottom 20, to achieveoptical image stabilization (OIS).

It should be understood that each of the first biasing elements W1 iselectrically independent and connects to an external power source. Thus,a plurality of different driving signals can be respectively supplied tothe first biasing elements W1 by the external power source, and thefirst biasing elements W1 can be independently controlled to havedifferent or the same length variations. For example, when applyingdriving signals to the first biasing elements W1, the first biasingelements W1 are deformed with different or the same length variations,so that the first biasing elements W1 can force the bottom 20 and theimage sensor IM to linearly move along the first central axis C1 of thebase 10 relative to the base 10, or force the bottom 20 and the imagesensor IM to move so that the second central axis C2 of the bottom 20has an angular displacement relative to the first central axis C1, toachieve optical image stabilization.

Specifically, as shown in FIG. 4, when the driving signals are appliedto the first biasing elements W1 disposed on the four sides of the mainbody 11 so that they have the same length variation, the first biasingelements W1 force the bottom 20 and the image sensor IM to move relativeto the base 10 in the direction of the first central axis C1 and theoptical axis O. When the driving signals are applied to the firstbiasing elements W1 so that they have different length variations, thesecond central axis C2 of the bottom 20 has an angular displacement θ1(as shown in FIG. 5) with respect to the first central axis C1 of thebase 10. In other words, by applying the driving signals and controllingthe length variations of the first biasing elements W1, the image sensorIM can be moved or rotated to compensate for the shift caused by theshaking of the camera module 1, so that image quality can be enhanced.

Furthermore, since the bottom 20 and the base 10 are connected via thefirst elastic elements S1, when the drive signals have not yet beenapplied to the first biasing elements W1, the bottom 20 can bepositioned at an initial position with respect to the base 10 by thefirst elastic elements S1.

The connection relationship between the base 10 and the holder 30 isdescribed below. Please refer to FIGS. 1 and 2, the holder 30 isdisposed on the base 10, and a receiving space 301 is extended throughthe holder 30, so that an optical lens (not shown) can be disposedtherein. The base 10 further has a stage portion 12 with a substantiallysquare or rectangular structure disposed on the main body 11 and fourprotrusions 13. The protrusions 13 are respectively disposed at the fourcorners of the stage portion 12 and protrude from the stage portion 12toward the holder 30. The holder 30 connects to the four protrusions 13of the base 10 by the four first elastic elements S1 (such as metalsprings).

The second biasing elements W2 (which may comprise shape-memory alloy(SMA) material) also connect to the base 10 and the holder 30.Specifically, two columnar position members P1 and P2 are disposed oneach side of the stage portion 12 of the base 10. As with the secondbiasing elements W2 at the bottom of FIG. 2A, the second biasingelements W2 are in contact with and extended around the position membersP1 and P2. All the second biasing elements W2 can be divided into threesections: a first section W21, a second section W22, and a third sectionW23. The first section W21 is substantially parallel to the firstcentral axis C1, and the second section W22 has a U-shaped structure andconnects to the first section W21. The third section W23 issubstantially perpendicular to the first central axis C1, wherein thesecond section W22 is connected to the first section W21 and the thirdsection W23, and the second section W22 and the third section W23 arerespectively situated at the left and right sides of the first sectionW21. As the second biasing elements W2 extend around the positionmembers P1 and P2 to form the three sections W21, W22, and W23, thelengths of the second biasing elements W2 disposed on each side of thestage portion 12 can be increased. Therefore, when the second biasingelements W2 are deformed, more variation in length can be generated.Furthermore, due to the distance between the position members P1 and P2in the direction of the first central axis C1, short-circuits betweenthe first, second, and third sections W11, W12, and W13 can be avoided.Furthermore, as shown in FIGS. 1 and 3, the first biasing elements W1and the second biasing elements W2 are situated in different positionsin the direction of the first central axis C1.

Still referring to FIG. 2A, a plurality of conductors E (such asconductive wires) are formed on the base 10 (the protrusions 13 of thebase 10) by insert molding or 3D molded interconnect device technology.The conductors E electrically connect to the second elastic elements S2and the second biasing elements W2, respectively, to form fourindependent circuits. As the deformation of the first biasing elementsW1, driving signals (e.g., current) can be supplied to the secondbiasing elements W2 from an external power source, and the lengths ofthe second biasing elements W2 can be changed to adjust the posture ofthe holder 30. It should be noted that, since the second elasticelements S2 are electrically conductive (such as springs comprisingmetal), the second biasing elements W2 and the conductors E can beelectrically connected to each other, so that no additional wires arerequired, saving space.

It should be understood that, when applying driving signals to thesecond biasing elements W2, the second biasing elements W2 may deformand have length variations that are the same or different. Thus, thesecond biasing elements W2 can force the holder 30 and the optical lensto move in the direction of the optical axis O with respect to the base10, or force the optical axis O to have an angular displacement relativeto the first central axis C1 of the base 10, to achieve the function offast optical focus or optical image stabilization (OIS). As shown inFIG. 6, when the driving signals are applied to the second biasingelements W2 on the four sides of the stage portion 12, if the lengthvariations thereof are substantially the same, the second biasingelements W2 can force the holder 30 and the optical lens to moverelative to the base 10 in the direction of the optical axis O. On theother hand, if the length variations thereof are different from eachother, the holder 30 and the optical axis O of the optical lens can havean angular displacement θ2 relative to the first central axis C1 of thebase 10 (as shown in FIG. 7).

As described above, by appropriately applying different drive signals tothe first biasing elements W1 and the second biasing elements W2, thelength variations can be appropriately controlled, so that: (1) thebottom 20 and the image sensor IM can move relative to the base 10, theholder 30 and the optical lens, and (2) the holder 30 and the opticallens can move relative to the base 10, thereby providing fast opticalfocus and optical image stabilization.

Furthermore, in another embodiment, the camera module 1 may have onlyone first biasing element W1 and one second biasing element W2. When adriving signal is applied to the first biasing element W 1, the firstbiasing element W1 is deformed, and the second central axis C2 of thebottom 20 can be angularly shifted by an angular displacement θ1relative to the first central axis C1 of the base 10; when a drivingsignal is applied to the second biasing element W2, the first biasingelement W2 is deformed, and the optical axis O can be angularly shiftedby an angular displacement θ2 relative to the first central axis C1, sothat tilt angle compensation of the camera module 1 can be accomplished.

According to the foregoing embodiment, a method for controlling thecamera module 1 is provided. One significant step of the method is toapply a plurality of drive signals to the first biasing elements W1respectively to move the bottom 20 and the image sensor IM along thefirst central axis C1 or the optical axis O, or to move the bottom 20and the image sensor IM so that the second central axis C2 of the bottom20 relative to the first central axis C1 has an angular displacement θ1.Furthermore, the method comprises applying a plurality of drivingsignals to the respective second biasing elements W2, so that the holder30 and the optical lens are moved in the direction of the optical axisO, or the optical axis O of the optical lens has an angular displacementθ2 with respect to the first central axis C1 of the base 10.

FIG. 8 is a schematic diagram of a camera module 2 according to anotherembodiment of the invention. The main difference between the cameramodule 2 in the present embodiment and the camera module 1 in theaforementioned embodiment is that the base 10′ of the camera module 2 isdifferent from the base 10, and the camera module 2 further comprises aframe 50, wherein the same elements corresponding to the aforementionedembodiment (FIGS. 1 and 2A-2B) are not described again here in detail.

Referring to FIGS. 8-10, a lower surface 501 of the frame 50, such asthe one affixed to a casing of an electronic device, is connected to thebottom 20 via the first elastic elements S1, and the bottom 20 isaffixed to a lower surface 101′ of the base 10. The base 10′ and thebottom 20 are surrounded by the frame 50, and a gap AP is formed betweenthe frame 50 and the base 10′. FIG. 10 is a sectional view diagram takenalong line B-B in FIG. 8, the first biasing elements W1 movably connectto the bottom 20 and the frame 50 via the conductive blocks Lrespectively affixed to the bottom 20 and the frame 50. Thus, whenapplying driving signals to the first biasing elements W1, the bottom 20affixed to the base 10′ (and the image sensor IM disposed on the bottom)and the holder 30 located on the base 10′ (and the optical lens held bythe holder 30) move together in the direction of a third central axis C3of the frame 50 relative to the frame 50, or move together relative tothe third central axis C3 with an angular displacement, forauto-focusing or optical image stabilization.

FIG. 11 is a schematic diagram of an optical transceiver assembly RCthat is arranged on a circuit board F and the image sensor IM. It shouldbe noted that an optical signal can be bi-directionally transmittedthrough the optical transceiver assembly RC between the image sensor IMin the foregoing embodiments and the circuit board F (e.g., a flexibleprinted circuit board, FPCB) disposed in an electronic device. Thecircuit board F, for example, may be provided on the base 10 or theframe 50, or may be affixed to a casing of the electronic device. Theoptical transceiver assembly RC includes a first optical couplingelement RC1 and a second optical coupling element RC2 disposed on theimage sensor IM and the circuit board F, respectively. When an image isacquired by the image sensor IM, the optical transceiver assembly RCwill transmit the image information to the circuit board F in the formof optical signals, so that there is no need to set an additionalphysical wire to achieve signal transmission, thereby saving space.

In summary, a camera module and a method for controlling the cameramodule are provided. The camera module comprises a holder for holding anoptical lens, a base, an image sensor and at least one first biasingelement. The holder is disposed on the base, and the bottom carries theimage sensor and is connected to the base via the first biasing element.When the length variation of the first biasing element occurs, thebottom and the image sensor move relative to the base in the directionof a first central axis of the base, or a second central axis of thebottom has an angular displacement relative to the first central axis.Therefore, by effecting various changes to the posture of the bottom, anoptical shaking compensation can be accomplished.

In addition, the camera module further comprises at least a secondbiasing element disposed on the base and connected to the base and theholder. When the second biasing element forces the holder to move by thelength variation thereof, the holder and the optical lens move relativeto the base in a direction that is substantially parallel to the firstcentral axis, or the optical axis of the optical lens has an angulardisplacement relative to the first central axis, so that the functionsof optical focus or optical shaking compensation can be accomplished.

Use of ordinal terms such as “first”, “second”, “third”, etc., in theclaims to modify a claim element does not by itself connote anypriority, precedence, or order of one claim element over another or thetemporal order in which acts of a method are performed, but are usedmerely as labels to distinguish one claim element having a certain namefrom another element having the same name (but for use of the ordinalterm) to distinguish the claim elements.

It will be apparent to those skilled in the art that variousmodifications and variations can be made in the invention. It isintended that the standard and examples be considered as exemplary only,with a true scope of the disclosed embodiments being indicated by thefollowing claims and their equivalents.

What is claimed is:
 1. A camera module, comprising: a base; a holder,configured to hold an optical lens and connected to the base; an imagesensor; a bottom, with the image sensor disposed thereon; and a firstbiasing element, comprising a shape-memory alloy and connected to thebottom and the base, wherein the first biasing element forces the bottomand the image sensor to move relative to the base.
 2. The camera moduleas claimed in claim 1, further comprising a plurality of first biasingelements forcing the bottom and the image sensor to linearly moverelative to the base.
 3. The camera module as claimed in claim 1,wherein the base has a first central axis, the bottom has a secondcentral axis, and the first biasing element forces the bottom and theimage sensor to move relative to the base, so that the second centralaxis has an angular displacement relative to the first central axis. 4.The camera module as claimed in claim 1, wherein the first biasingelement is situated between the base and the bottom.
 5. The cameramodule as claimed in claim 1, further comprising a first elastic elementconnected to the bottom and the base.
 6. The camera module as claimed inclaim 5, wherein the first elastic element is substantiallyperpendicular to an optical axis of the optical lens and has an outersection, an inner section, and a middle section, wherein the outersection and the inner section are respectively affixed to the base andthe bottom, and the middle section connects the outer section to theinner section.
 7. The camera module as claimed in claim 1, furthercomprising a guiding member, and the base has a groove with the guidingmember disposed therein, wherein the first biasing element is extendedaround the guiding member and has a U-shaped structure.
 8. The cameramodule as claimed in claim 1, further comprising a second biasingelement, comprising a shape-memory alloy and connected to the holder andthe base, wherein the second biasing element forces the holder and theoptical lens to move relative to the base.
 9. The camera module asclaimed in claim 8, further comprising a conductor formed on the base byinsert molding or 3D molded interconnect device technology, wherein theconductor is electrically connected to the second biasing element. 10.The camera module as claimed in claim 1, wherein the second biasingelement has a first section and a U-shaped second section, and the firstsection is substantially parallel to a first central axis of the baseand connects to the second section.
 11. The camera module as claimed inclaim 10, wherein the second biasing element further has a third sectionsubstantially perpendicular to the first central axis, and the secondsection connects the first section to the third section, wherein thesecond section and the third section are situated on opposite sides ofthe first section.
 12. The camera module as claimed in claim 1, furthercomprising a second elastic element, and the base further has a stageportion and at least one protrusion, wherein the protrusion protrudestoward the holder from the stage portion, and the second elastic elementconnects the protrusion to the holder.
 13. A method for controlling thecamera module as claimed in claim 1, wherein the camera module furthercomprises a plurality of first biasing elements disposed between thebase and the bottom, the method comprising: applying a plurality ofdriving signals to the first biasing elements respectively to move thebottom, so that a second central axis of the bottom has an angulardisplacement relative to a first central axis of the base.
 14. A methodfor controlling the camera module as claimed in claim 8, wherein thecamera module further comprises a plurality of second biasing elementsdisposed on different sides of the base, the method comprising: applyinga plurality of driving signals to the second biasing elementsrespectively to move the holder, so that an optical axis of the opticallens has an angular displacement relative to a first central axis of thebase.
 15. A camera module, comprising: a base, having a first centralaxis; a holder, configured to hold an optical lens and connected to thebase; a bottom, having a second central axis and affixed to a lowersurface of the base; an image sensor, disposed on the bottom; a frame,having a third central axis and surrounding the base and the bottom; anda first biasing element, comprising a shape-memory alloy and connectedto the bottom and the frame, wherein when the first biasing elementdeforms, the first biasing element forces the bottom, the image sensor,and the base to move together relative to the frame, and the firstcentral axis and the second central axis have an angular displacementrelative to the third central axis.
 16. The camera module as claimed inclaim 15, wherein a gap is formed between the frame and the base.